/* reset.css | base.css  用于移除页面元素默认样式的*/
body,
ul,
li,
ol,
dl,
h1,h2,h3,h4,h5,h6,p,
div,
section,
header,
nav,
footer,
main,
aside,
a,
span,
form ,
input , 
button{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

ul,
ol,
dl {
    list-style: none;
}

input , button {
    border: none;
    outline: none;
}
a,
a:visited,
a:active,
a:link,
a:hover {
    color: #000;
    text-decoration: none;
}


/* 公共的CSS代码 */
.f-left {
    float: left;
}
.f-right {
    float: right;
}
.clearfix::after {
    content: "";
    display: block;
    clear: both;
}



i{
    display: inline-block;
    vertical-align: middle;
}